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From "David Figueroa (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-24092) spark.python.worker.reuse does not work?
Date Wed, 25 Apr 2018 20:10:00 GMT
David Figueroa created SPARK-24092:
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             Summary: spark.python.worker.reuse does not work?
                 Key: SPARK-24092
                 URL: https://issues.apache.org/jira/browse/SPARK-24092
             Project: Spark
          Issue Type: Question
          Components: PySpark
    Affects Versions: 2.3.0
            Reporter: David Figueroa


{{spark.python.worker.reuse is true by default but even after explicitly setting to true the
code below does not print the same python worker process ids.}}

{{{{{code:title=procid.py|borderStyle=solid} }}}}

def return_pid(_): yield os.getpid()
spark = SparkSession.builder.getOrCreate()
 pids = set(spark.sparkContext.range(32).mapPartitions(return_pid).collect())
print(pids)
pids = set(spark.sparkContext.range(32).mapPartitions(return_pid).collect())
print(pids)

{{{{{code}}}}}



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